noun
potassium ferrocyanide
Inorganic compound used in analytical chemistry, photography, and as an anti-caking agent. Technical term.
フェロシアン化カリウムは、鉄イオンの検出に用いられる。
Potassium ferrocyanide is used for detecting iron ions.
Potassium ferricyanide, the oxidized counterpart; used in similar applications but differs in oxidation state and color reactions.
From English 'ferrocyanide' + 化 (か, '-ide') + カリウム (potassium).